U+1D9B9 "𝦹" Signwriting Movement-Floorplane Hump Hitting Ceiling Small Double Unicode Character

U+1D9B9 "𝦹" Signwriting Movement-Floorplane Hump Hitting Ceiling Small Double is a glyph from the SignWriting script, a system designed to visually represent sign languages through iconic symbols. This particular character describes a specific movement in sign language notation, indicating a small, double-time impact of a hump—representing a handshape or contact point—against the ceiling of the floorplane, which is the two-dimensional writing surface where SignWriting is drawn. The term "floorplane" refers to the horizontal baseline of the script, while "hump hitting ceiling" suggests a curved shape moving upward to strike the top boundary of that plane, and "small double" specifies that the motion is performed twice in a compact, repetitive manner. This detailed notation enables precise documentation of subtle sign language nuances for analysis, education, and preservation.

General Properties

Code Point	U+1D9B9
Version Added	8.0
Name	Signwriting Movement-Floorplane Hump Hitting Ceiling Small Double
Block	Sutton SignWriting
General Category	Other Symbol
Canonical Combining Class	Not Reordered
Bidirectional Class	Left To Right

Encodings

HTML Decimal Encoding	𝦹
HTML Hex Encoding	𝦹
UTF-8 Encoding	0xF0 0x9D 0xA6 0xB9
UTF-16 Encoding	0xD836 0xDDB9
UTF-32 Encoding	0x0001D9B9
C/C++/Java Escape	\ud836\uddb9

Unicode Properties

NFC Quick Check	Yes
NFD Quick Check	Yes
NFKC Quick Check	Yes
NFKD Quick Check	Yes
Numeric Type	None
Numeric Value	NaN
Line Break	Alphabetic
Script	SignWriting
Script Extensions	SignWriting
Indic Syllabic Category	Other
Vertical Orientation	Upright
Grapheme Base	Yes
Grapheme Cluster Break	Other
Word Break	Other
Sentence Break	Other